1RZ2 | pdb_00001rz2

1.6A crystal structure of the protein BA4783/Q81L49 (similar to sortase B) from Bacillus anthracis.

• PDB DOI: https://doi.org/10.2210/pdb1RZ2/pdb

• Classification: STRUCTURAL GENOMICS, UNKNOWN FUNCTION
• Organism(s): Bacillus anthracis str. Ames
• Expression System: Escherichia coli BL21
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2003-12-23 Released: 2004-07-06 
• Deposition Author(s): Wu, R., Zhang, R., Gornicki, P., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 
  0.266 (Depositor), 0.272 (DCC) 
• R-Value Work: 
  0.225 (Depositor), 0.229 (DCC) 
• R-Value Observed: 
  0.225 (Depositor) 

Literature

Structures of sortase B from Staphylococcus aureus and Bacillus anthracis reveal catalytic amino acid triad in the active site.

Zhang, R., Wu, R., Joachimiak, G., Mazmanian, S.K., Missiakas, D.M., Gornicki, P., Schneewind, O., Joachimiak, A.

(2004) Structure 12: 1147-1156

• PubMed: 15242591 
• DOI: https://doi.org/10.1016/j.str.2004.06.001
• Primary Citation Related Structures: 
  1NG5, 1RZ2


• PubMed Abstract: 
  

  Surface proteins attached by sortases to the cell wall envelope of bacterial pathogens play important roles during infection. Sorting and attachment of these proteins is directed by C-terminal signals. Sortase B of S. aureus recognizes a motif NPQTN, cleaves the polypeptide after the Thr residue, and attaches the protein to pentaglycine cross-bridges. Sortase B of B. anthracis is thought to recognize the NPKTG motif, and attaches surface proteins to m-diaminopimelic acid cross-bridges. We have determined crystal structure of sortase B from B. anthracis and S. aureus at 1.6 and 2.0 A resolutions, respectively. These structures show a beta-barrel fold with alpha-helical elements on its outside, a structure thus far exclusive to the sortase family. A putative active site located on the edge of the beta-barrel is comprised of a Cys-His-Asp catalytic triad and presumably faces the bacterial cell surface. A putative binding site for the sorting signal is located nearby.

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Organizational Affiliation: 
• Structural Biology Center and Midwest Center for Structural Genomics, Argonne National Laboratory, 9700 South Cass Avenue, Building 202, Argonne, IL 60439 USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 30.14 kDa 
• Atom Count: 1,968 
• Modeled Residue Count: 214 
• Deposited Residue Count: 254 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
conserved hypothetical protein BA4783	A	254	Bacillus anthracis str. Ames	Mutation(s): 0  Gene Names: BA4783 Membrane Entity: Yes
UniProt
Find proteins for A0A6L8PZR0 (Bacillus anthracis) Explore A0A6L8PZR0  Go to UniProtKB:  A0A6L8PZR0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free:  0.266 (Depositor), 0.272 (DCC) 
• R-Value Work:  0.225 (Depositor), 0.229 (DCC) 
• R-Value Observed: 0.225 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.474	α = 90
b = 64.599	β = 105.77
c = 42.964	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
SBC-Collect	data collection
HKL-2000	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-07-06 
Deposition Author(s): Wu, R., Zhang, R., Gornicki, P., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2004-07-06
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.3: 2024-02-14
  Changes: Data collection, Database references